Preparing NOJ

A+B Problem

1000ms 65536K


Calculate the sum of a and b.


Two integer a,b.


Output a+b

Sample Input:

1 2

Sample Output:



Q: Where are the input and the output?

A: Your program shall always read input from stdin (Standard Input) and write output to stdout (Standard Output). For example, you can use scanf in C or cin in C++ to read from stdin, and use printf in C or cout in C++ to write to stdout.

You shall not output any extra data to standard output other than that required by the problem, otherwise you will get a Wrong Answer.

User programs are not allowed to open and read from/write to files. You will get a Runtime Error or a Wrong Answer if you try to do so.

Here is a sample solution using C++/G++ :

#include <iostream>

using namespace std;

int main()
    int a,b;
    cin >> a >> b;
    cout << a+b << endl;
    return 0;

It's important that the return type of main() must be int when you use G++/GCC, or you may get compile error.

Here is a sample solution using C/GCC :

#include <stdio.h>

int main()
    int a,b;
    scanf("%d %d",&a, &b);
    return 0;

Here is a sample solution using Java :

import java.util.*;
public class Main
    public static void main(String args[]) throws Exception
        Scanner cin=new Scanner(;
        int a=cin.nextInt(),b=cin.nextInt();

With one of the most elegant languages in the world however, PHP could do that within one line (which is shorter than python by the way) :

<?=array_sum(fscanf(STDIN, "%d %d"));

Now, let's see some Javascript :

const [a, b] = readline().split(' ').map(n => parseInt(n, 10));
print((a + b).toString());

Things may be quite messy with Python and frankly I don't like it but... Anyway, here is a sample solution using Python 3 :

print(sum(int(x) for x in input().split(' ')))

Here is a sample solution using Python 2 :

print sum(int(x) for x in raw_input().split(' '))

And now, Go is here :

package main
import "fmt"
func main() {
    var a, b int
    fmt.Scanf("%d%d", &a, &b)
    fmt.Printf("%d\n", a + b)



Provider NOJ

Code NOJ1001


Submitted 1616

Passed 732

AC Rate 45.3%

Date 04/20/2019 10:03:10


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